Concrete water-tank.



J. H. McGOY. CONCRETE WATER TANK.

APPLICATION FILED FEB. 25

Patented Jan burr JOHN H, MCCOY, OE HARRISVILLE, PENNSYLVANIA.

CONCRETE WATER-TANK.

Application filed February 25, 1910.

To all whom it may concern: I Be it known that I, JonN H. McCoy, a l citizen of the United States, residing at l'larrisville, in the county of Butler and State of Pennsylvania, have invented certain new and useful Improvements in Concrete W ater-Tanks, of which the following is a specificati'on, reference being had therein to the accompanying drawing. v

My invention consists of an improvement in water tanks or the like for the purpose of maintaining a supply of water above any suitable level, as the tanks of a rail way.

The invention is designed to provide a tank of such character, circular in cross section, constructed of concrete or cement, having a lower base structure and an upper tank portion mounted thereon consisting of a floor or bottom and inner and outer cylindrical walls with an intervening air or vacuum cavity, reinforced and constructed as hereinafter more fully described.

In the drawings; Figure l is a central vertical sectional view, partly broken away through a tank structure constructed in accordance with my invention. Fig. .2 is a horizontal sectional View on the line X. X. of Fig. 1.

Generally stated, the entire structure consists of a cylindrical wall a of cement or concrete extending upwardly from the fou'n-' dation or base, having annularly arranged. reinforcing members 7) of any suitable kind and well understood in the art of reinforced concrete. The wall (4 preferably tapers upwardly as shown, to the point where the floor 0 of the tank structure proper is supported upon it, and the wall being preferably reinforced by an inwardly' and upwardlyslop ing enlargement as indicated for insuring a good support for the inner tank wall.

While the structure, which'embodies the present improvement, may be mounted upon any suitable base or structure, it preferably extends upwardly abovea cylindrical concrete wall a and over a centrally arranged hollow supporting pier d.

a, (3 represents floor beams extending radially Irom around the upper edge of pier (l to and resting upon; the upper portion of wall a as shown, which beams are preferably steel I beams or of other suitable structural form. The outer wall a, the centrally arranged pier Specification of Letters Patent.

. ably reinforced (Z and the radially arranged beams 6 thus constitute the main supporting structure for l Patented Jan. 17, 1911. Serial No. 545,951.

the floor or bottom 0 of the tank and its side walls and the floor is likewise preferby means of radially and. annularly arranged reinforcing elements of any suitable type, as headed bolts, and supported by the enlarged upper portion of wall a, at the base of the tank wall referred to. The floor structure may, however, be of any suitable type or construction adapted to suppbrt the weight of'the contents of the tank, and the tank is incidentally provided with inlet, overflow and supply pipes g, h, and 2', the latter having a suitable valve j and opening mechanism therefor, as the flexible connection iv and operating levernl. The tank structure proper above the floor consists of annularly arranged inner and outer walls 722 and n-respectively extending above the juncture of the floor or bottom 0 with low-er wall a and'with an intervening annular space 0. As shown, the inner wall m is somewhat heavier in thickness than the outer wall, having an inner upwardly taper" ing face, and provided with reinforcing annular tension members p of well known construction, preferably arranged closer together at the base of the wall than its upper portion and reinfin-cing the wall throughout.

The outer wall it extends upwardly straight,

preferably, flush with the outer surface of lower wall a and is similarly reinforced by tension members while the intervening space 0, which. may be of any desired width, extends within a short distance of the top of the inner and outer wall, at which point the space is bridged across as indicated at 1" providing a solid terminal constituting the upper portion of the tank. The tank is pro vided with a covering roof .9 of any suitable design and with other features of construction or utility as ladders, etc., depending upon the use to which the apparatus is to be put.

The obj ect of the intervening space 0 is to provide an insulating cavity to prevent the conduction of heat, whereby'to obviate the freezing of the contents of the tank in cold weather. Owing to the peculiar construction of the inner wall, which is at all times under tension when the tank is full and which is strongly braced and reinforced by the annular tension members p, it will maihtain the position with relation to the outer" wall 12, without any intervening biacing con nections. The outer wall 9 likewise, with this class of apparatus.

its tension bracing'rnembers q, will remain intact and immovable against any strains put upon it. This is due to the ;circular form of both walls, to the fact that both' vent the escape of the. heat units of the wa-' ter in cold weather, but in order to render the operation more efficient, if necessary, the' air mav be wholly or partially exhausted from the cavity 0, for which purpose, I have provided a pump t connected with cavity 0 by a pipe u as shown, or the air 'maybe exhausted in any other suitable manner. By locating the pipe u within the chamber formed within the foundation walls a it is conveniently positioned for operation and also well protected from climatic changes.

The advantages of the construction will be appreciated by all those familiar with The material employed is practically indestructible and not subject to decay from moisture or changes in temperature. The protection of the contents of the tank by a double circular wall construction with the intervening s ace, in the manner shown, insures against reezing, while the, invention may bevariously modified in diiterent features of detail by the builder or skilled mechanic, all such changes are to be considered as within the scope of the' following claims.

\Vhat'I claim is, l. A water tank consisting of an integral concrete structure comprising a circular floor-portion and foundation, .u wardly extending inner and outer close y adjacent concentric annular walls with an intervening annular space, said wall having a solid annular top bridging said space, and annular reinforcing members embedded in said walls, spaced apart at gradually increasing distances upwardly from the base of the walls, substantially as set forth.

2. In a concrete water tank, the combination of an outer circular foundationwall and an inner concentric circular foundation wall with an interveningannular space, radially arranged floor beams having their ends above the outer and inner foundation wall respectively, a floor incorporated with and, carried by said walls and beams and inclosing the latter, .an upwardly extending double-wall tank structure above the outer foundation wall consisting of outer and inner concentric walls with an intervening annular space, said wall having a solid annular top bridging said space, and annular reinforcing members embedded in said walls, said reinforcing members being spaced apart at gradually increasing distances upwardly from the base of said walls, substantially as set forth. v

In testimony whereof I aiiix my signature in presence'of two witnesses.

JOHN H. MoCOY.

Witnesses:

E. E. Wren, LOUISE SPEARS. 

